Root Cause Analysis for Gearboxes

Specialized Root Cause Analysis programs for Industrial Gearbox Reliability & Maintenance.

Get a Free Assessment Common Questions

47% Reduction in unplanned downtime

85% Faults detected before failure

3-6mo Average fault lead time

5:1 Typical program ROI

Why it matters

Key Benefits

Repeat Failure Elimination

Structured root cause analysis of gearboxes failures identifies the physical, human, and systemic causes behind failures of the gear sets, input and output shafts, bearings, and oil distribution system. Addressing root causes eliminates repeat failures rather than simply replacing broken parts.

Corrective Action Effectiveness

RCA for gearboxes produces specific, measurable corrective actions with assigned owners and completion dates. Tracking corrective action implementation ensures that investigation findings translate into actual reliability improvements.

Organizational Learning

Documenting RCA findings for gearboxes failures creates a knowledge base that prevents similar failures across the fleet. Sharing lessons learned across sites and equipment types multiplies the value of each investigation.

Context

Challenge & Approach

The Reliability Challenge

Gear tooth fractures classified as bending fatigue may be initiated by case crushing, inclusion-originated pitting, or tooth tip interference from thermal growth or bearing displacement. Bearing failures that cause gear mesh misalignment create secondary gear damage that obscures the original failure sequence. Oil contamination that causes micropitting and bearing surface fatigue may have been resolved by the time of failure, removing the evidence from current oil samples. Coupling misalignment that overloads gear teeth is often corrected during the rebuild without being identified as the root cause.

Our Approach

We preserve all gear and bearing components for detailed examination. Gear tooth surfaces are classified per AGMA 1010 for wear mode—pitting, spalling, scuffing, micropitting, or plastic deformation. Fracture surfaces are examined metallurgically to identify initiation points, propagation mode, and material anomalies. Bearing surfaces are analyzed for contact patterns, surface fatigue, contamination damage, or electrical discharge evidence. Oil analysis history is reviewed for particle count, water content, viscosity, and wear metal trends leading up to the failure. Operating load data from the driven equipment is reconstructed to identify overload events. Alignment records are reviewed. The RCA report maps the complete failure sequence from initiation through final damage with root cause determination and corrective actions.

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Root Cause Analysis for Gearboxes

Key Benefits

Repeat Failure Elimination

Corrective Action Effectiveness

Organizational Learning

Challenge & Approach

The Reliability Challenge

Our Approach

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FAQ

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Understand Gearbox Failure Origins